While there is no way to restrict search results to downloadable books only, you can limit your results to books that are fully viewable by using the Advanced Search feature of Google Books. Narrow your results by online availability, enter your search terms and click Advanced Search. Although not all books that are fully viewable are also downloadable as PDF files, this will help narrow your search results closer to books that are downloadable.
Have questions about our Partner Program? Visit our Partner Help Center.
Learn from other Google users
Find answers, ask questions, and share your expertise with others in the Books Product Forum.